Claude Opus 5.5 vs GPT-6 Astra in finance

Every finance benchmark where both have a score (Anthropic and OpenAI). Data refreshed 2 Nov 2026.

Shared benchmarks
2
Claude Opus 5.5 only
4
GPT-6 Astra only
1

Shared benchmarks, side by side

Each benchmark is drawn on its own scale. Bars are not comparable across rows.

  • Claude Opus 5.5
  • GPT-6 Astra

  • Ramp Accounting Bench mean reward % (criteria, mean of 3 attempts), higher is better

    Claude Opus 5.5:50.5 (better)
    GPT-6 Astra:48.7

  • Excel Modeling Benchmark (EMB) accuracy % (v1.1), higher is better

    Claude Opus 5.5:75.8 (better)
    GPT-6 Astra:72.7
Benchmark
Claude Opus 5.5
GPT-6 Astra

7 benchmarks, 2 scored for both. Bold marks the better score where both have one.

Ramp Accounting Benchmean reward % (criteria, mean of 3 attempts), higher is better
50.5
Ramp Labs Accounting Bench (Official board, 21 Sept 2026)
48.7
Ramp Labs Accounting Bench (Official board, 5 Sept 2026)
Excel Modeling Benchmark (EMB)accuracy % (v1.1), higher is better
75.8
Vals.ai leaderboard (Official board, 29 Oct 2026)
72.7
Vals.ai leaderboard (Official board, 29 Oct 2026)
APEX-AccountingMean Score (% criteria passed), higher is better
Not scored
64.7
Mercor APEX-Accounting leaderboard (Official board, 1 Nov 2026)
FinanceBench% correct, no filing given (150-question sample), higher is better
60.3
Moneda run, 2026-11-02 (Run by Moneda, 2 Nov 2026)
Not scored
Finance Agent BenchmarkPartial Credit accuracy % (v2.1), higher is better
67.8
Vals.ai leaderboard (Official board, 29 Oct 2026)
Not scored
Vals Finance Indexindex accuracy %, higher is better
65.6
Vals.ai leaderboard (Official board, 29 Oct 2026)
Not scored
Tax Agent Benchaccuracy % (all-pass x citation factor), higher is better
45.6
Vals.ai leaderboard (Official board, 29 Oct 2026)
Not scored

Scores from different benchmarks use different scales and are not added up. Settings can differ between sources; see each leaderboard for details.